drivers/bluetooth/btusb.c

   1 /*
   2  *
   3  *  Generic Bluetooth USB driver
   4  *
   5  *  Copyright (C) 2005-2008  Marcel Holtmann <marcel@holtmann.org>
   6  *
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  */
  23
  24 #include <linux/kernel.h>
  25 #include <linux/module.h>
  26 #include <linux/init.h>
  27 #include <linux/slab.h>
  28 #include <linux/types.h>
  29 #include <linux/sched.h>
  30 #include <linux/errno.h>
  31 #include <linux/skbuff.h>
  32
  33 #include <linux/usb.h>
  34
  35 #include <net/bluetooth/bluetooth.h>
  36 #include <net/bluetooth/hci_core.h>
  37
  38 #define VERSION "0.6"
  39
  40 static int ignore_dga;
  41 static int ignore_csr;
  42 static int ignore_sniffer;
  43 static int disable_scofix;
  44 static int force_scofix;
  45
  46 static int reset = 1;
  47
  48 static struct usb_driver btusb_driver;
  49
  50 #define BTUSB_IGNORE            0x01
  51 #define BTUSB_DIGIANSWER        0x02
  52 #define BTUSB_CSR               0x04
  53 #define BTUSB_SNIFFER           0x08
  54 #define BTUSB_BCM92035          0x10
  55 #define BTUSB_BROKEN_ISOC       0x20
  56 #define BTUSB_WRONG_SCO_MTU     0x40
  57 #define BTUSB_ATH3012           0x80
  58 #define BTUSB_INTEL_BOOT        0x200
  59
  60 static struct usb_device_id btusb_table[] = {
  61         /* Generic Bluetooth USB device */
  62         { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
  63
  64         /* Apple-specific (Broadcom) devices */
  65         { USB_VENDOR_AND_INTERFACE_INFO(0x05ac, 0xff, 0x01, 0x01) },
  66
  67         /* MediaTek MT76x0E */
  68         { USB_DEVICE(0x0e8d, 0x763f) },
  69
  70         /* Broadcom SoftSailing reporting vendor specific */
  71         { USB_DEVICE(0x0a5c, 0x21e1) },
  72
  73         /* Apple MacBookPro 7,1 */
  74         { USB_DEVICE(0x05ac, 0x8213) },
  75
  76         /* Apple iMac11,1 */
  77         { USB_DEVICE(0x05ac, 0x8215) },
  78
  79         /* Apple MacBookPro6,2 */
  80         { USB_DEVICE(0x05ac, 0x8218) },
  81
  82         /* Apple MacBookAir3,1, MacBookAir3,2 */
  83         { USB_DEVICE(0x05ac, 0x821b) },
  84
  85         /* Apple MacBookAir4,1 */
  86         { USB_DEVICE(0x05ac, 0x821f) },
  87
  88         /* Apple MacBookPro8,2 */
  89         { USB_DEVICE(0x05ac, 0x821a) },
  90
  91         /* Apple MacMini5,1 */
  92         { USB_DEVICE(0x05ac, 0x8281) },
  93
  94         /* AVM BlueFRITZ! USB v2.0 */
  95         { USB_DEVICE(0x057c, 0x3800) },
  96
  97         /* Bluetooth Ultraport Module from IBM */
  98         { USB_DEVICE(0x04bf, 0x030a) },
  99
 100         /* ALPS Modules with non-standard id */
 101         { USB_DEVICE(0x044e, 0x3001) },
 102         { USB_DEVICE(0x044e, 0x3002) },
 103
 104         /* Ericsson with non-standard id */
 105         { USB_DEVICE(0x0bdb, 0x1002) },
 106
 107         /* Canyon CN-BTU1 with HID interfaces */
 108         { USB_DEVICE(0x0c10, 0x0000) },
 109
 110         /* Broadcom BCM20702A0 */
 111         { USB_DEVICE(0x0489, 0xe042) },
 112         { USB_DEVICE(0x04ca, 0x2003) },
 113         { USB_DEVICE(0x0b05, 0x17b5) },
 114         { USB_DEVICE(0x0b05, 0x17cb) },
 115         { USB_DEVICE(0x413c, 0x8197) },
 116
 117         /* Foxconn - Hon Hai */
 118         { USB_VENDOR_AND_INTERFACE_INFO(0x0489, 0xff, 0x01, 0x01) },
 119
 120         /* Broadcom devices with vendor specific id */
 121         { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01) },
 122
 123         /* ASUSTek Computer - Broadcom based */
 124         { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
 125
 126         /* Belkin F8065bf - Broadcom based */
 127         { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },
 128
 129         /* IMC Networks - Broadcom based */
 130         { USB_VENDOR_AND_INTERFACE_INFO(0x13d3, 0xff, 0x01, 0x01) },
 131
 132         /* Intel Bluetooth USB Bootloader (RAM module) */
 133         { USB_DEVICE(0x8087, 0x0a5a),
 134           .driver_info = BTUSB_INTEL_BOOT | BTUSB_BROKEN_ISOC },
 135
 136         { }     /* Terminating entry */
 137 };
 138
 139 MODULE_DEVICE_TABLE(usb, btusb_table);
 140
 141 static struct usb_device_id blacklist_table[] = {
 142         /* CSR BlueCore devices */
 143         { USB_DEVICE(0x0a12, 0x0001), .driver_info = BTUSB_CSR },
 144
 145         /* Broadcom BCM2033 without firmware */
 146         { USB_DEVICE(0x0a5c, 0x2033), .driver_info = BTUSB_IGNORE },
 147
 148         /* Atheros 3011 with sflash firmware */
 149         { USB_DEVICE(0x0489, 0xe027), .driver_info = BTUSB_IGNORE },
 150         { USB_DEVICE(0x0489, 0xe03d), .driver_info = BTUSB_IGNORE },
 151         { USB_DEVICE(0x04f2, 0xaff1), .driver_info = BTUSB_IGNORE },
 152         { USB_DEVICE(0x0930, 0x0215), .driver_info = BTUSB_IGNORE },
 153         { USB_DEVICE(0x0cf3, 0x3002), .driver_info = BTUSB_IGNORE },
 154         { USB_DEVICE(0x0cf3, 0xe019), .driver_info = BTUSB_IGNORE },
 155         { USB_DEVICE(0x13d3, 0x3304), .driver_info = BTUSB_IGNORE },
 156
 157         /* Atheros AR9285 Malbec with sflash firmware */
 158         { USB_DEVICE(0x03f0, 0x311d), .driver_info = BTUSB_IGNORE },
 159
 160         /* Atheros 3012 with sflash firmware */
 161         { USB_DEVICE(0x0489, 0xe04d), .driver_info = BTUSB_ATH3012 },
 162         { USB_DEVICE(0x0489, 0xe04e), .driver_info = BTUSB_ATH3012 },
 163         { USB_DEVICE(0x0489, 0xe056), .driver_info = BTUSB_ATH3012 },
 164         { USB_DEVICE(0x0489, 0xe057), .driver_info = BTUSB_ATH3012 },
 165         { USB_DEVICE(0x0489, 0xe05f), .driver_info = BTUSB_ATH3012 },
 166         { USB_DEVICE(0x0489, 0xe076), .driver_info = BTUSB_ATH3012 },
 167         { USB_DEVICE(0x0489, 0xe078), .driver_info = BTUSB_ATH3012 },
 168         { USB_DEVICE(0x0489, 0xe095), .driver_info = BTUSB_ATH3012 },
 169         { USB_DEVICE(0x04c5, 0x1330), .driver_info = BTUSB_ATH3012 },
 170         { USB_DEVICE(0x04ca, 0x3004), .driver_info = BTUSB_ATH3012 },
 171         { USB_DEVICE(0x04ca, 0x3005), .driver_info = BTUSB_ATH3012 },
 172         { USB_DEVICE(0x04ca, 0x3006), .driver_info = BTUSB_ATH3012 },
 173         { USB_DEVICE(0x04ca, 0x3007), .driver_info = BTUSB_ATH3012 },
 174         { USB_DEVICE(0x04ca, 0x3008), .driver_info = BTUSB_ATH3012 },
 175         { USB_DEVICE(0x04ca, 0x300b), .driver_info = BTUSB_ATH3012 },
 176         { USB_DEVICE(0x04ca, 0x300f), .driver_info = BTUSB_ATH3012 },
 177         { USB_DEVICE(0x04ca, 0x3010), .driver_info = BTUSB_ATH3012 },
 178         { USB_DEVICE(0x04ca, 0x3014), .driver_info = BTUSB_ATH3012 },
 179         { USB_DEVICE(0x0930, 0x0219), .driver_info = BTUSB_ATH3012 },
 180         { USB_DEVICE(0x0930, 0x021c), .driver_info = BTUSB_ATH3012 },
 181         { USB_DEVICE(0x0930, 0x0220), .driver_info = BTUSB_ATH3012 },
 182         { USB_DEVICE(0x0930, 0x0227), .driver_info = BTUSB_ATH3012 },
 183         { USB_DEVICE(0x0b05, 0x17d0), .driver_info = BTUSB_ATH3012 },
 184         { USB_DEVICE(0x0cf3, 0x0036), .driver_info = BTUSB_ATH3012 },
 185         { USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
 186         { USB_DEVICE(0x0cf3, 0x3008), .driver_info = BTUSB_ATH3012 },
 187         { USB_DEVICE(0x0cf3, 0x311d), .driver_info = BTUSB_ATH3012 },
 188         { USB_DEVICE(0x0cf3, 0x311e), .driver_info = BTUSB_ATH3012 },
 189         { USB_DEVICE(0x0cf3, 0x311f), .driver_info = BTUSB_ATH3012 },
 190         { USB_DEVICE(0x0cf3, 0x3121), .driver_info = BTUSB_ATH3012 },
 191         { USB_DEVICE(0x0cf3, 0x817a), .driver_info = BTUSB_ATH3012 },
 192         { USB_DEVICE(0x0cf3, 0x817b), .driver_info = BTUSB_ATH3012 },
 193         { USB_DEVICE(0x0cf3, 0xe003), .driver_info = BTUSB_ATH3012 },
 194         { USB_DEVICE(0x0cf3, 0xe004), .driver_info = BTUSB_ATH3012 },
 195         { USB_DEVICE(0x0cf3, 0xe005), .driver_info = BTUSB_ATH3012 },
 196         { USB_DEVICE(0x13d3, 0x3362), .driver_info = BTUSB_ATH3012 },
 197         { USB_DEVICE(0x13d3, 0x3375), .driver_info = BTUSB_ATH3012 },
 198         { USB_DEVICE(0x13d3, 0x3393), .driver_info = BTUSB_ATH3012 },
 199         { USB_DEVICE(0x13d3, 0x3395), .driver_info = BTUSB_ATH3012 },
 200         { USB_DEVICE(0x13d3, 0x3402), .driver_info = BTUSB_ATH3012 },
 201         { USB_DEVICE(0x13d3, 0x3408), .driver_info = BTUSB_ATH3012 },
 202         { USB_DEVICE(0x13d3, 0x3423), .driver_info = BTUSB_ATH3012 },
 203         { USB_DEVICE(0x13d3, 0x3432), .driver_info = BTUSB_ATH3012 },
 204         { USB_DEVICE(0x13d3, 0x3474), .driver_info = BTUSB_ATH3012 },
 205
 206         /* Atheros AR5BBU12 with sflash firmware */
 207         { USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE },
 208
 209         /* Atheros AR5BBU12 with sflash firmware */
 210         { USB_DEVICE(0x0489, 0xe036), .driver_info = BTUSB_ATH3012 },
 211         { USB_DEVICE(0x0489, 0xe03c), .driver_info = BTUSB_ATH3012 },
 212
 213         /* Broadcom BCM2035 */
 214         { USB_DEVICE(0x0a5c, 0x2009), .driver_info = BTUSB_BCM92035 },
 215         { USB_DEVICE(0x0a5c, 0x200a), .driver_info = BTUSB_WRONG_SCO_MTU },
 216         { USB_DEVICE(0x0a5c, 0x2035), .driver_info = BTUSB_WRONG_SCO_MTU },
 217
 218         /* Broadcom BCM2045 */
 219         { USB_DEVICE(0x0a5c, 0x2039), .driver_info = BTUSB_WRONG_SCO_MTU },
 220         { USB_DEVICE(0x0a5c, 0x2101), .driver_info = BTUSB_WRONG_SCO_MTU },
 221
 222         /* IBM/Lenovo ThinkPad with Broadcom chip */
 223         { USB_DEVICE(0x0a5c, 0x201e), .driver_info = BTUSB_WRONG_SCO_MTU },
 224         { USB_DEVICE(0x0a5c, 0x2110), .driver_info = BTUSB_WRONG_SCO_MTU },
 225
 226         /* HP laptop with Broadcom chip */
 227         { USB_DEVICE(0x03f0, 0x171d), .driver_info = BTUSB_WRONG_SCO_MTU },
 228
 229         /* Dell laptop with Broadcom chip */
 230         { USB_DEVICE(0x413c, 0x8126), .driver_info = BTUSB_WRONG_SCO_MTU },
 231
 232         /* Dell Wireless 370 and 410 devices */
 233         { USB_DEVICE(0x413c, 0x8152), .driver_info = BTUSB_WRONG_SCO_MTU },
 234         { USB_DEVICE(0x413c, 0x8156), .driver_info = BTUSB_WRONG_SCO_MTU },
 235
 236         /* Belkin F8T012 and F8T013 devices */
 237         { USB_DEVICE(0x050d, 0x0012), .driver_info = BTUSB_WRONG_SCO_MTU },
 238         { USB_DEVICE(0x050d, 0x0013), .driver_info = BTUSB_WRONG_SCO_MTU },
 239
 240         /* Asus WL-BTD202 device */
 241         { USB_DEVICE(0x0b05, 0x1715), .driver_info = BTUSB_WRONG_SCO_MTU },
 242
 243         /* Kensington Bluetooth USB adapter */
 244         { USB_DEVICE(0x047d, 0x105e), .driver_info = BTUSB_WRONG_SCO_MTU },
 245
 246         /* RTX Telecom based adapters with buggy SCO support */
 247         { USB_DEVICE(0x0400, 0x0807), .driver_info = BTUSB_BROKEN_ISOC },
 248         { USB_DEVICE(0x0400, 0x080a), .driver_info = BTUSB_BROKEN_ISOC },
 249
 250         /* CONWISE Technology based adapters with buggy SCO support */
 251         { USB_DEVICE(0x0e5e, 0x6622), .driver_info = BTUSB_BROKEN_ISOC },
 252
 253         /* Digianswer devices */
 254         { USB_DEVICE(0x08fd, 0x0001), .driver_info = BTUSB_DIGIANSWER },
 255         { USB_DEVICE(0x08fd, 0x0002), .driver_info = BTUSB_IGNORE },
 256
 257         /* CSR BlueCore Bluetooth Sniffer */
 258         { USB_DEVICE(0x0a12, 0x0002), .driver_info = BTUSB_SNIFFER },
 259
 260         /* Frontline ComProbe Bluetooth Sniffer */
 261         { USB_DEVICE(0x16d3, 0x0002), .driver_info = BTUSB_SNIFFER },
 262
 263         { }     /* Terminating entry */
 264 };
 265
 266 #define BTUSB_MAX_ISOC_FRAMES   10
 267
 268 #define BTUSB_INTR_RUNNING      0
 269 #define BTUSB_BULK_RUNNING      1
 270 #define BTUSB_ISOC_RUNNING      2
 271 #define BTUSB_SUSPENDING        3
 272 #define BTUSB_DID_ISO_RESUME    4
 273
 274 struct btusb_data {
 275         struct hci_dev       *hdev;
 276         struct usb_device    *udev;
 277         struct usb_interface *intf;
 278         struct usb_interface *isoc;
 279
 280         spinlock_t lock;
 281
 282         unsigned long flags;
 283
 284         struct work_struct work;
 285         struct work_struct waker;
 286
 287         struct usb_anchor tx_anchor;
 288         struct usb_anchor intr_anchor;
 289         struct usb_anchor bulk_anchor;
 290         struct usb_anchor isoc_anchor;
 291         struct usb_anchor deferred;
 292         int tx_in_flight;
 293         spinlock_t txlock;
 294
 295         struct usb_endpoint_descriptor *intr_ep;
 296         struct usb_endpoint_descriptor *bulk_tx_ep;
 297         struct usb_endpoint_descriptor *bulk_rx_ep;
 298         struct usb_endpoint_descriptor *isoc_tx_ep;
 299         struct usb_endpoint_descriptor *isoc_rx_ep;
 300
 301         __u8 cmdreq_type;
 302
 303         unsigned int sco_num;
 304         int isoc_altsetting;
 305         int suspend_count;
 306 };
 307
 308 static int inc_tx(struct btusb_data *data)
 309 {
 310         unsigned long flags;
 311         int rv;
 312
 313         spin_lock_irqsave(&data->txlock, flags);
 314         rv = test_bit(BTUSB_SUSPENDING, &data->flags);
 315         if (!rv)
 316                 data->tx_in_flight++;
 317         spin_unlock_irqrestore(&data->txlock, flags);
 318
 319         return rv;
 320 }
 321
 322 static void btusb_intr_complete(struct urb *urb)
 323 {
 324         struct hci_dev *hdev = urb->context;
 325         struct btusb_data *data = hdev->driver_data;
 326         int err;
 327
 328         BT_DBG("%s urb %p status %d count %d", hdev->name,
 329                                         urb, urb->status, urb->actual_length);
 330
 331         if (!test_bit(HCI_RUNNING, &hdev->flags))
 332                 return;
 333
 334         if (urb->status == 0) {
 335                 hdev->stat.byte_rx += urb->actual_length;
 336
 337                 if (hci_recv_fragment(hdev, HCI_EVENT_PKT,
 338                                                 urb->transfer_buffer,
 339                                                 urb->actual_length) < 0) {
 340                         BT_ERR("%s corrupted event packet", hdev->name);
 341                         hdev->stat.err_rx++;
 342                 }
 343         } else if (urb->status == -ENOENT) {
 344                 /* Avoid suspend failed when usb_kill_urb */
 345                 return;
 346         }
 347
 348         if (!test_bit(BTUSB_INTR_RUNNING, &data->flags))
 349                 return;
 350
 351         usb_mark_last_busy(data->udev);
 352         usb_anchor_urb(urb, &data->intr_anchor);
 353
 354         err = usb_submit_urb(urb, GFP_ATOMIC);
 355         if (err < 0) {
 356                 /* -EPERM: urb is being killed;
 357                  * -ENODEV: device got disconnected */
 358                 if (err != -EPERM && err != -ENODEV)
 359                         BT_ERR("%s urb %p failed to resubmit (%d)",
 360                                                 hdev->name, urb, -err);
 361                 usb_unanchor_urb(urb);
 362         }
 363 }
 364
 365 static int btusb_submit_intr_urb(struct hci_dev *hdev, gfp_t mem_flags)
 366 {
 367         struct btusb_data *data = hdev->driver_data;
 368         struct urb *urb;
 369         unsigned char *buf;
 370         unsigned int pipe;
 371         int err, size;
 372
 373         BT_DBG("%s", hdev->name);
 374
 375         if (!data->intr_ep)
 376                 return -ENODEV;
 377
 378         urb = usb_alloc_urb(0, mem_flags);
 379         if (!urb)
 380                 return -ENOMEM;
 381
 382         size = le16_to_cpu(data->intr_ep->wMaxPacketSize);
 383
 384         buf = kmalloc(size, mem_flags);
 385         if (!buf) {
 386                 usb_free_urb(urb);
 387                 return -ENOMEM;
 388         }
 389
 390         pipe = usb_rcvintpipe(data->udev, data->intr_ep->bEndpointAddress);
 391
 392         usb_fill_int_urb(urb, data->udev, pipe, buf, size,
 393                                                 btusb_intr_complete, hdev,
 394                                                 data->intr_ep->bInterval);
 395
 396         urb->transfer_flags |= URB_FREE_BUFFER;
 397
 398         usb_anchor_urb(urb, &data->intr_anchor);
 399
 400         err = usb_submit_urb(urb, mem_flags);
 401         if (err < 0) {
 402                 BT_ERR("%s urb %p submission failed (%d)",
 403                                                 hdev->name, urb, -err);
 404                 usb_unanchor_urb(urb);
 405         }
 406
 407         usb_free_urb(urb);
 408
 409         return err;
 410 }
 411
 412 static void btusb_bulk_complete(struct urb *urb)
 413 {
 414         struct hci_dev *hdev = urb->context;
 415         struct btusb_data *data = hdev->driver_data;
 416         int err;
 417
 418         BT_DBG("%s urb %p status %d count %d", hdev->name,
 419                                         urb, urb->status, urb->actual_length);
 420
 421         if (!test_bit(HCI_RUNNING, &hdev->flags))
 422                 return;
 423
 424         if (urb->status == 0) {
 425                 hdev->stat.byte_rx += urb->actual_length;
 426
 427                 if (hci_recv_fragment(hdev, HCI_ACLDATA_PKT,
 428                                                 urb->transfer_buffer,
 429                                                 urb->actual_length) < 0) {
 430                         BT_ERR("%s corrupted ACL packet", hdev->name);
 431                         hdev->stat.err_rx++;
 432                 }
 433         } else if (urb->status == -ENOENT) {
 434                 /* Avoid suspend failed when usb_kill_urb */
 435                 return;
 436         }
 437
 438         if (!test_bit(BTUSB_BULK_RUNNING, &data->flags))
 439                 return;
 440
 441         usb_anchor_urb(urb, &data->bulk_anchor);
 442         usb_mark_last_busy(data->udev);
 443
 444         err = usb_submit_urb(urb, GFP_ATOMIC);
 445         if (err < 0) {
 446                 /* -EPERM: urb is being killed;
 447                  * -ENODEV: device got disconnected */
 448                 if (err != -EPERM && err != -ENODEV)
 449                         BT_ERR("%s urb %p failed to resubmit (%d)",
 450                                                 hdev->name, urb, -err);
 451                 usb_unanchor_urb(urb);
 452         }
 453 }
 454
 455 static int btusb_submit_bulk_urb(struct hci_dev *hdev, gfp_t mem_flags)
 456 {
 457         struct btusb_data *data = hdev->driver_data;
 458         struct urb *urb;
 459         unsigned char *buf;
 460         unsigned int pipe;
 461         int err, size = HCI_MAX_FRAME_SIZE;
 462
 463         BT_DBG("%s", hdev->name);
 464
 465         if (!data->bulk_rx_ep)
 466                 return -ENODEV;
 467
 468         urb = usb_alloc_urb(0, mem_flags);
 469         if (!urb)
 470                 return -ENOMEM;
 471
 472         buf = kmalloc(size, mem_flags);
 473         if (!buf) {
 474                 usb_free_urb(urb);
 475                 return -ENOMEM;
 476         }
 477
 478         pipe = usb_rcvbulkpipe(data->udev, data->bulk_rx_ep->bEndpointAddress);
 479
 480         usb_fill_bulk_urb(urb, data->udev, pipe,
 481                                         buf, size, btusb_bulk_complete, hdev);
 482
 483         urb->transfer_flags |= URB_FREE_BUFFER;
 484
 485         usb_mark_last_busy(data->udev);
 486         usb_anchor_urb(urb, &data->bulk_anchor);
 487
 488         err = usb_submit_urb(urb, mem_flags);
 489         if (err < 0) {
 490                 BT_ERR("%s urb %p submission failed (%d)",
 491                                                 hdev->name, urb, -err);
 492                 usb_unanchor_urb(urb);
 493         }
 494
 495         usb_free_urb(urb);
 496
 497         return err;
 498 }
 499
 500 static void btusb_isoc_complete(struct urb *urb)
 501 {
 502         struct hci_dev *hdev = urb->context;
 503         struct btusb_data *data = hdev->driver_data;
 504         int i, err;
 505
 506         BT_DBG("%s urb %p status %d count %d", hdev->name,
 507                                         urb, urb->status, urb->actual_length);
 508
 509         if (!test_bit(HCI_RUNNING, &hdev->flags))
 510                 return;
 511
 512         if (urb->status == 0) {
 513                 for (i = 0; i < urb->number_of_packets; i++) {
 514                         unsigned int offset = urb->iso_frame_desc[i].offset;
 515                         unsigned int length = urb->iso_frame_desc[i].actual_length;
 516
 517                         if (urb->iso_frame_desc[i].status)
 518                                 continue;
 519
 520                         hdev->stat.byte_rx += length;
 521
 522                         if (hci_recv_fragment(hdev, HCI_SCODATA_PKT,
 523                                                 urb->transfer_buffer + offset,
 524                                                                 length) < 0) {
 525                                 BT_ERR("%s corrupted SCO packet", hdev->name);
 526                                 hdev->stat.err_rx++;
 527                         }
 528                 }
 529         } else if (urb->status == -ENOENT) {
 530                 /* Avoid suspend failed when usb_kill_urb */
 531                 return;
 532         }
 533
 534         if (!test_bit(BTUSB_ISOC_RUNNING, &data->flags))
 535                 return;
 536
 537         usb_anchor_urb(urb, &data->isoc_anchor);
 538
 539         err = usb_submit_urb(urb, GFP_ATOMIC);
 540         if (err < 0) {
 541                 /* -EPERM: urb is being killed;
 542                  * -ENODEV: device got disconnected */
 543                 if (err != -EPERM && err != -ENODEV)
 544                         BT_ERR("%s urb %p failed to resubmit (%d)",
 545                                                 hdev->name, urb, -err);
 546                 usb_unanchor_urb(urb);
 547         }
 548 }
 549
 550 static inline void __fill_isoc_descriptor(struct urb *urb, int len, int mtu)
 551 {
 552         int i, offset = 0;
 553
 554         BT_DBG("len %d mtu %d", len, mtu);
 555
 556         for (i = 0; i < BTUSB_MAX_ISOC_FRAMES && len >= mtu;
 557                                         i++, offset += mtu, len -= mtu) {
 558                 urb->iso_frame_desc[i].offset = offset;
 559                 urb->iso_frame_desc[i].length = mtu;
 560         }
 561
 562         if (len && i < BTUSB_MAX_ISOC_FRAMES) {
 563                 urb->iso_frame_desc[i].offset = offset;
 564                 urb->iso_frame_desc[i].length = len;
 565                 i++;
 566         }
 567
 568         urb->number_of_packets = i;
 569 }
 570
 571 static int btusb_submit_isoc_urb(struct hci_dev *hdev, gfp_t mem_flags)
 572 {
 573         struct btusb_data *data = hdev->driver_data;
 574         struct urb *urb;
 575         unsigned char *buf;
 576         unsigned int pipe;
 577         int err, size;
 578
 579         BT_DBG("%s", hdev->name);
 580
 581         if (!data->isoc_rx_ep)
 582                 return -ENODEV;
 583
 584         urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, mem_flags);
 585         if (!urb)
 586                 return -ENOMEM;
 587
 588         size = le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize) *
 589                                                 BTUSB_MAX_ISOC_FRAMES;
 590
 591         buf = kmalloc(size, mem_flags);
 592         if (!buf) {
 593                 usb_free_urb(urb);
 594                 return -ENOMEM;
 595         }
 596
 597         pipe = usb_rcvisocpipe(data->udev, data->isoc_rx_ep->bEndpointAddress);
 598
 599         usb_fill_int_urb(urb, data->udev, pipe, buf, size, btusb_isoc_complete,
 600                                 hdev, data->isoc_rx_ep->bInterval);
 601
 602         urb->transfer_flags  = URB_FREE_BUFFER | URB_ISO_ASAP;
 603
 604         __fill_isoc_descriptor(urb, size,
 605                         le16_to_cpu(data->isoc_rx_ep->wMaxPacketSize));
 606
 607         usb_anchor_urb(urb, &data->isoc_anchor);
 608
 609         err = usb_submit_urb(urb, mem_flags);
 610         if (err < 0) {
 611                 BT_ERR("%s urb %p submission failed (%d)",
 612                                                 hdev->name, urb, -err);
 613                 usb_unanchor_urb(urb);
 614         }
 615
 616         usb_free_urb(urb);
 617
 618         return err;
 619 }
 620
 621 static void btusb_tx_complete(struct urb *urb)
 622 {
 623         struct sk_buff *skb = urb->context;
 624         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 625         struct btusb_data *data = hdev->driver_data;
 626
 627         BT_DBG("%s urb %p status %d count %d", hdev->name,
 628                                         urb, urb->status, urb->actual_length);
 629
 630         if (!test_bit(HCI_RUNNING, &hdev->flags))
 631                 goto done;
 632
 633         if (!urb->status)
 634                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 635         else
 636                 hdev->stat.err_tx++;
 637
 638 done:
 639         spin_lock(&data->txlock);
 640         data->tx_in_flight--;
 641         spin_unlock(&data->txlock);
 642
 643         kfree(urb->setup_packet);
 644
 645         kfree_skb(skb);
 646 }
 647
 648 static void btusb_isoc_tx_complete(struct urb *urb)
 649 {
 650         struct sk_buff *skb = urb->context;
 651         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 652
 653         BT_DBG("%s urb %p status %d count %d", hdev->name,
 654                                         urb, urb->status, urb->actual_length);
 655
 656         if (!test_bit(HCI_RUNNING, &hdev->flags))
 657                 goto done;
 658
 659         if (!urb->status)
 660                 hdev->stat.byte_tx += urb->transfer_buffer_length;
 661         else
 662                 hdev->stat.err_tx++;
 663
 664 done:
 665         kfree(urb->setup_packet);
 666
 667         kfree_skb(skb);
 668 }
 669
 670 static int btusb_open(struct hci_dev *hdev)
 671 {
 672         struct btusb_data *data = hdev->driver_data;
 673         int err;
 674
 675         BT_DBG("%s", hdev->name);
 676
 677         err = usb_autopm_get_interface(data->intf);
 678         if (err < 0)
 679                 return err;
 680
 681         data->intf->needs_remote_wakeup = 1;
 682
 683         if (test_and_set_bit(HCI_RUNNING, &hdev->flags))
 684                 goto done;
 685
 686         if (test_and_set_bit(BTUSB_INTR_RUNNING, &data->flags))
 687                 goto done;
 688
 689         err = btusb_submit_intr_urb(hdev, GFP_KERNEL);
 690         if (err < 0)
 691                 goto failed;
 692
 693         err = btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 694         if (err < 0) {
 695                 usb_kill_anchored_urbs(&data->intr_anchor);
 696                 goto failed;
 697         }
 698
 699         set_bit(BTUSB_BULK_RUNNING, &data->flags);
 700         btusb_submit_bulk_urb(hdev, GFP_KERNEL);
 701
 702 done:
 703         usb_autopm_put_interface(data->intf);
 704         return 0;
 705
 706 failed:
 707         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 708         clear_bit(HCI_RUNNING, &hdev->flags);
 709         usb_autopm_put_interface(data->intf);
 710         return err;
 711 }
 712
 713 static void btusb_stop_traffic(struct btusb_data *data)
 714 {
 715         usb_kill_anchored_urbs(&data->intr_anchor);
 716         usb_kill_anchored_urbs(&data->bulk_anchor);
 717         usb_kill_anchored_urbs(&data->isoc_anchor);
 718 }
 719
 720 static int btusb_close(struct hci_dev *hdev)
 721 {
 722         struct btusb_data *data = hdev->driver_data;
 723         int err;
 724
 725         BT_DBG("%s", hdev->name);
 726
 727         if (!test_and_clear_bit(HCI_RUNNING, &hdev->flags))
 728                 return 0;
 729
 730         cancel_work_sync(&data->work);
 731         cancel_work_sync(&data->waker);
 732
 733         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 734         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
 735         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
 736
 737         btusb_stop_traffic(data);
 738         err = usb_autopm_get_interface(data->intf);
 739         if (err < 0)
 740                 goto failed;
 741
 742         data->intf->needs_remote_wakeup = 0;
 743         usb_autopm_put_interface(data->intf);
 744
 745 failed:
 746         usb_scuttle_anchored_urbs(&data->deferred);
 747         return 0;
 748 }
 749
 750 static int btusb_flush(struct hci_dev *hdev)
 751 {
 752         struct btusb_data *data = hdev->driver_data;
 753
 754         BT_DBG("%s", hdev->name);
 755
 756         usb_kill_anchored_urbs(&data->tx_anchor);
 757
 758         return 0;
 759 }
 760
 761 static int btusb_send_frame(struct sk_buff *skb)
 762 {
 763         struct hci_dev *hdev = (struct hci_dev *) skb->dev;
 764         struct btusb_data *data = hdev->driver_data;
 765         struct usb_ctrlrequest *dr;
 766         struct urb *urb;
 767         unsigned int pipe;
 768         int err;
 769
 770         BT_DBG("%s", hdev->name);
 771
 772         if (!test_bit(HCI_RUNNING, &hdev->flags))
 773                 return -EBUSY;
 774
 775         switch (bt_cb(skb)->pkt_type) {
 776         case HCI_COMMAND_PKT:
 777                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 778                 if (!urb)
 779                         return -ENOMEM;
 780
 781                 dr = kmalloc(sizeof(*dr), GFP_ATOMIC);
 782                 if (!dr) {
 783                         usb_free_urb(urb);
 784                         return -ENOMEM;
 785                 }
 786
 787                 dr->bRequestType = data->cmdreq_type;
 788                 dr->bRequest     = 0;
 789                 dr->wIndex       = 0;
 790                 dr->wValue       = 0;
 791                 dr->wLength      = __cpu_to_le16(skb->len);
 792
 793                 pipe = usb_sndctrlpipe(data->udev, 0x00);
 794
 795                 usb_fill_control_urb(urb, data->udev, pipe, (void *) dr,
 796                                 skb->data, skb->len, btusb_tx_complete, skb);
 797
 798                 hdev->stat.cmd_tx++;
 799                 break;
 800
 801         case HCI_ACLDATA_PKT:
 802                 if (!data->bulk_tx_ep)
 803                         return -ENODEV;
 804
 805                 urb = usb_alloc_urb(0, GFP_ATOMIC);
 806                 if (!urb)
 807                         return -ENOMEM;
 808
 809                 pipe = usb_sndbulkpipe(data->udev,
 810                                         data->bulk_tx_ep->bEndpointAddress);
 811
 812                 usb_fill_bulk_urb(urb, data->udev, pipe,
 813                                 skb->data, skb->len, btusb_tx_complete, skb);
 814
 815                 hdev->stat.acl_tx++;
 816                 break;
 817
 818         case HCI_SCODATA_PKT:
 819                 if (!data->isoc_tx_ep || hdev->conn_hash.sco_num < 1)
 820                         return -ENODEV;
 821
 822                 urb = usb_alloc_urb(BTUSB_MAX_ISOC_FRAMES, GFP_ATOMIC);
 823                 if (!urb)
 824                         return -ENOMEM;
 825
 826                 pipe = usb_sndisocpipe(data->udev,
 827                                         data->isoc_tx_ep->bEndpointAddress);
 828
 829                 usb_fill_int_urb(urb, data->udev, pipe,
 830                                 skb->data, skb->len, btusb_isoc_tx_complete,
 831                                 skb, data->isoc_tx_ep->bInterval);
 832
 833                 urb->transfer_flags  = URB_ISO_ASAP;
 834
 835                 __fill_isoc_descriptor(urb, skb->len,
 836                                 le16_to_cpu(data->isoc_tx_ep->wMaxPacketSize));
 837
 838                 hdev->stat.sco_tx++;
 839                 goto skip_waking;
 840
 841         default:
 842                 return -EILSEQ;
 843         }
 844
 845         err = inc_tx(data);
 846         if (err) {
 847                 usb_anchor_urb(urb, &data->deferred);
 848                 schedule_work(&data->waker);
 849                 err = 0;
 850                 goto done;
 851         }
 852
 853 skip_waking:
 854         usb_anchor_urb(urb, &data->tx_anchor);
 855
 856         err = usb_submit_urb(urb, GFP_ATOMIC);
 857         if (err < 0) {
 858                 BT_ERR("%s urb %p submission failed", hdev->name, urb);
 859                 kfree(urb->setup_packet);
 860                 usb_unanchor_urb(urb);
 861         } else {
 862                 usb_mark_last_busy(data->udev);
 863         }
 864
 865 done:
 866         usb_free_urb(urb);
 867         return err;
 868 }
 869
 870 static void btusb_destruct(struct hci_dev *hdev)
 871 {
 872         struct btusb_data *data = hdev->driver_data;
 873
 874         BT_DBG("%s", hdev->name);
 875
 876         kfree(data);
 877 }
 878
 879 static void btusb_notify(struct hci_dev *hdev, unsigned int evt)
 880 {
 881         struct btusb_data *data = hdev->driver_data;
 882
 883         BT_DBG("%s evt %d", hdev->name, evt);
 884
 885         if (hdev->conn_hash.sco_num != data->sco_num) {
 886                 data->sco_num = hdev->conn_hash.sco_num;
 887                 schedule_work(&data->work);
 888         }
 889 }
 890
 891 static inline int __set_isoc_interface(struct hci_dev *hdev, int altsetting)
 892 {
 893         struct btusb_data *data = hdev->driver_data;
 894         struct usb_interface *intf = data->isoc;
 895         struct usb_endpoint_descriptor *ep_desc;
 896         int i, err;
 897
 898         if (!data->isoc)
 899                 return -ENODEV;
 900
 901         err = usb_set_interface(data->udev, 1, altsetting);
 902         if (err < 0) {
 903                 BT_ERR("%s setting interface failed (%d)", hdev->name, -err);
 904                 return err;
 905         }
 906
 907         data->isoc_altsetting = altsetting;
 908
 909         data->isoc_tx_ep = NULL;
 910         data->isoc_rx_ep = NULL;
 911
 912         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
 913                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
 914
 915                 if (!data->isoc_tx_ep && usb_endpoint_is_isoc_out(ep_desc)) {
 916                         data->isoc_tx_ep = ep_desc;
 917                         continue;
 918                 }
 919
 920                 if (!data->isoc_rx_ep && usb_endpoint_is_isoc_in(ep_desc)) {
 921                         data->isoc_rx_ep = ep_desc;
 922                         continue;
 923                 }
 924         }
 925
 926         if (!data->isoc_tx_ep || !data->isoc_rx_ep) {
 927                 BT_ERR("%s invalid SCO descriptors", hdev->name);
 928                 return -ENODEV;
 929         }
 930
 931         return 0;
 932 }
 933
 934 static void btusb_work(struct work_struct *work)
 935 {
 936         struct btusb_data *data = container_of(work, struct btusb_data, work);
 937         struct hci_dev *hdev = data->hdev;
 938         int err;
 939
 940         if (hdev->conn_hash.sco_num > 0) {
 941                 if (!test_bit(BTUSB_DID_ISO_RESUME, &data->flags)) {
 942                         err = usb_autopm_get_interface(data->isoc ? data->isoc : data->intf);
 943                         if (err < 0) {
 944                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 945                                 usb_kill_anchored_urbs(&data->isoc_anchor);
 946                                 return;
 947                         }
 948
 949                         set_bit(BTUSB_DID_ISO_RESUME, &data->flags);
 950                 }
 951                 if (data->isoc_altsetting != 2) {
 952                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 953                         usb_kill_anchored_urbs(&data->isoc_anchor);
 954
 955                         if (__set_isoc_interface(hdev, 2) < 0)
 956                                 return;
 957                 }
 958
 959                 if (!test_and_set_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
 960                         if (btusb_submit_isoc_urb(hdev, GFP_KERNEL) < 0)
 961                                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 962                         else
 963                                 btusb_submit_isoc_urb(hdev, GFP_KERNEL);
 964                 }
 965         } else {
 966                 clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
 967                 usb_kill_anchored_urbs(&data->isoc_anchor);
 968
 969                 __set_isoc_interface(hdev, 0);
 970                 if (test_and_clear_bit(BTUSB_DID_ISO_RESUME, &data->flags))
 971                         usb_autopm_put_interface(data->isoc ? data->isoc : data->intf);
 972         }
 973 }
 974
 975 static void btusb_waker(struct work_struct *work)
 976 {
 977         struct btusb_data *data = container_of(work, struct btusb_data, waker);
 978         int err;
 979
 980         err = usb_autopm_get_interface(data->intf);
 981         if (err < 0)
 982                 return;
 983
 984         usb_autopm_put_interface(data->intf);
 985 }
 986
 987 static int btusb_probe(struct usb_interface *intf,
 988                                 const struct usb_device_id *id)
 989 {
 990         struct usb_endpoint_descriptor *ep_desc;
 991         struct btusb_data *data;
 992         struct hci_dev *hdev;
 993         int i, err;
 994
 995         BT_DBG("intf %p id %p", intf, id);
 996
 997         /* interface numbers are hardcoded in the spec */
 998         if (intf->cur_altsetting->desc.bInterfaceNumber != 0)
 999                 return -ENODEV;
1000
1001         if (!id->driver_info) {
1002                 const struct usb_device_id *match;
1003                 match = usb_match_id(intf, blacklist_table);
1004                 if (match)
1005                         id = match;
1006         }
1007
1008         if (id->driver_info == BTUSB_IGNORE)
1009                 return -ENODEV;
1010
1011         if (ignore_dga && id->driver_info & BTUSB_DIGIANSWER)
1012                 return -ENODEV;
1013
1014         if (ignore_csr && id->driver_info & BTUSB_CSR)
1015                 return -ENODEV;
1016
1017         if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
1018                 return -ENODEV;
1019
1020         if (id->driver_info & BTUSB_ATH3012) {
1021                 struct usb_device *udev = interface_to_usbdev(intf);
1022
1023                 /* Old firmware would otherwise let ath3k driver load
1024                  * patch and sysconfig files */
1025                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
1026                         return -ENODEV;
1027         }
1028
1029         data = kzalloc(sizeof(*data), GFP_KERNEL);
1030         if (!data)
1031                 return -ENOMEM;
1032
1033         for (i = 0; i < intf->cur_altsetting->desc.bNumEndpoints; i++) {
1034                 ep_desc = &intf->cur_altsetting->endpoint[i].desc;
1035
1036                 if (!data->intr_ep && usb_endpoint_is_int_in(ep_desc)) {
1037                         data->intr_ep = ep_desc;
1038                         continue;
1039                 }
1040
1041                 if (!data->bulk_tx_ep && usb_endpoint_is_bulk_out(ep_desc)) {
1042                         data->bulk_tx_ep = ep_desc;
1043                         continue;
1044                 }
1045
1046                 if (!data->bulk_rx_ep && usb_endpoint_is_bulk_in(ep_desc)) {
1047                         data->bulk_rx_ep = ep_desc;
1048                         continue;
1049                 }
1050         }
1051
1052         if (!data->intr_ep || !data->bulk_tx_ep || !data->bulk_rx_ep) {
1053                 kfree(data);
1054                 return -ENODEV;
1055         }
1056
1057         data->cmdreq_type = USB_TYPE_CLASS;
1058
1059         data->udev = interface_to_usbdev(intf);
1060         data->intf = intf;
1061
1062         spin_lock_init(&data->lock);
1063
1064         INIT_WORK(&data->work, btusb_work);
1065         INIT_WORK(&data->waker, btusb_waker);
1066         spin_lock_init(&data->txlock);
1067
1068         init_usb_anchor(&data->tx_anchor);
1069         init_usb_anchor(&data->intr_anchor);
1070         init_usb_anchor(&data->bulk_anchor);
1071         init_usb_anchor(&data->isoc_anchor);
1072         init_usb_anchor(&data->deferred);
1073
1074         hdev = hci_alloc_dev();
1075         if (!hdev) {
1076                 kfree(data);
1077                 return -ENOMEM;
1078         }
1079
1080         hdev->bus = HCI_USB;
1081         hdev->driver_data = data;
1082
1083         data->hdev = hdev;
1084
1085         SET_HCIDEV_DEV(hdev, &intf->dev);
1086
1087         hdev->open     = btusb_open;
1088         hdev->close    = btusb_close;
1089         hdev->flush    = btusb_flush;
1090         hdev->send     = btusb_send_frame;
1091         hdev->destruct = btusb_destruct;
1092         hdev->notify   = btusb_notify;
1093
1094         hdev->owner = THIS_MODULE;
1095
1096         if (id->driver_info & BTUSB_INTEL_BOOT)
1097                 set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1098
1099         /* Interface numbers are hardcoded in the specification */
1100         data->isoc = usb_ifnum_to_if(data->udev, 1);
1101
1102         if (!reset)
1103                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1104
1105         if (force_scofix || id->driver_info & BTUSB_WRONG_SCO_MTU) {
1106                 if (!disable_scofix)
1107                         set_bit(HCI_QUIRK_FIXUP_BUFFER_SIZE, &hdev->quirks);
1108         }
1109
1110         if (id->driver_info & BTUSB_BROKEN_ISOC)
1111                 data->isoc = NULL;
1112
1113         if (id->driver_info & BTUSB_DIGIANSWER) {
1114                 data->cmdreq_type = USB_TYPE_VENDOR;
1115                 set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1116         }
1117
1118         if (id->driver_info & BTUSB_CSR) {
1119                 struct usb_device *udev = data->udev;
1120
1121                 /* Old firmware would otherwise execute USB reset */
1122                 if (le16_to_cpu(udev->descriptor.bcdDevice) < 0x117)
1123                         set_bit(HCI_QUIRK_NO_RESET, &hdev->quirks);
1124         }
1125
1126         if (id->driver_info & BTUSB_SNIFFER) {
1127                 struct usb_device *udev = data->udev;
1128
1129                 /* New sniffer firmware has crippled HCI interface */
1130                 if (le16_to_cpu(udev->descriptor.bcdDevice) > 0x997)
1131                         set_bit(HCI_QUIRK_RAW_DEVICE, &hdev->quirks);
1132
1133                 data->isoc = NULL;
1134         }
1135
1136         if (id->driver_info & BTUSB_BCM92035) {
1137                 unsigned char cmd[] = { 0x3b, 0xfc, 0x01, 0x00 };
1138                 struct sk_buff *skb;
1139
1140                 skb = bt_skb_alloc(sizeof(cmd), GFP_KERNEL);
1141                 if (skb) {
1142                         memcpy(skb_put(skb, sizeof(cmd)), cmd, sizeof(cmd));
1143                         skb_queue_tail(&hdev->driver_init, skb);
1144                 }
1145         }
1146
1147         if (data->isoc) {
1148                 err = usb_driver_claim_interface(&btusb_driver,
1149                                                         data->isoc, data);
1150                 if (err < 0) {
1151                         hci_free_dev(hdev);
1152                         kfree(data);
1153                         return err;
1154                 }
1155         }
1156
1157         err = hci_register_dev(hdev);
1158         if (err < 0) {
1159                 hci_free_dev(hdev);
1160                 kfree(data);
1161                 return err;
1162         }
1163
1164         usb_set_intfdata(intf, data);
1165
1166         return 0;
1167 }
1168
1169 static void btusb_disconnect(struct usb_interface *intf)
1170 {
1171         struct btusb_data *data = usb_get_intfdata(intf);
1172         struct hci_dev *hdev;
1173
1174         BT_DBG("intf %p", intf);
1175
1176         if (!data)
1177                 return;
1178
1179         hdev = data->hdev;
1180
1181         __hci_dev_hold(hdev);
1182
1183         usb_set_intfdata(data->intf, NULL);
1184
1185         if (data->isoc)
1186                 usb_set_intfdata(data->isoc, NULL);
1187
1188         hci_unregister_dev(hdev);
1189
1190         if (intf == data->isoc)
1191                 usb_driver_release_interface(&btusb_driver, data->intf);
1192         else if (data->isoc)
1193                 usb_driver_release_interface(&btusb_driver, data->isoc);
1194
1195         __hci_dev_put(hdev);
1196
1197         hci_free_dev(hdev);
1198 }
1199
1200 #ifdef CONFIG_PM
1201 static int btusb_suspend(struct usb_interface *intf, pm_message_t message)
1202 {
1203         struct btusb_data *data = usb_get_intfdata(intf);
1204
1205         BT_DBG("intf %p", intf);
1206
1207         if (data->suspend_count++)
1208                 return 0;
1209
1210         spin_lock_irq(&data->txlock);
1211         if (!(PMSG_IS_AUTO(message) && data->tx_in_flight)) {
1212                 set_bit(BTUSB_SUSPENDING, &data->flags);
1213                 spin_unlock_irq(&data->txlock);
1214         } else {
1215                 spin_unlock_irq(&data->txlock);
1216                 data->suspend_count--;
1217                 return -EBUSY;
1218         }
1219
1220         cancel_work_sync(&data->work);
1221
1222         btusb_stop_traffic(data);
1223         usb_kill_anchored_urbs(&data->tx_anchor);
1224
1225         return 0;
1226 }
1227
1228 static void play_deferred(struct btusb_data *data)
1229 {
1230         struct urb *urb;
1231         int err;
1232
1233         while ((urb = usb_get_from_anchor(&data->deferred))) {
1234                 err = usb_submit_urb(urb, GFP_ATOMIC);
1235                 if (err < 0)
1236                         break;
1237
1238                 data->tx_in_flight++;
1239         }
1240         usb_scuttle_anchored_urbs(&data->deferred);
1241 }
1242
1243 static int btusb_resume(struct usb_interface *intf)
1244 {
1245         struct btusb_data *data = usb_get_intfdata(intf);
1246         struct hci_dev *hdev = data->hdev;
1247         int err = 0;
1248
1249         BT_DBG("intf %p", intf);
1250
1251         if (--data->suspend_count)
1252                 return 0;
1253
1254         if (!test_bit(HCI_RUNNING, &hdev->flags))
1255                 goto done;
1256
1257         if (test_bit(BTUSB_INTR_RUNNING, &data->flags)) {
1258                 err = btusb_submit_intr_urb(hdev, GFP_NOIO);
1259                 if (err < 0) {
1260                         clear_bit(BTUSB_INTR_RUNNING, &data->flags);
1261                         goto failed;
1262                 }
1263         }
1264
1265         if (test_bit(BTUSB_BULK_RUNNING, &data->flags)) {
1266                 err = btusb_submit_bulk_urb(hdev, GFP_NOIO);
1267                 if (err < 0) {
1268                         clear_bit(BTUSB_BULK_RUNNING, &data->flags);
1269                         goto failed;
1270                 }
1271
1272                 btusb_submit_bulk_urb(hdev, GFP_NOIO);
1273         }
1274
1275         if (test_bit(BTUSB_ISOC_RUNNING, &data->flags)) {
1276                 if (btusb_submit_isoc_urb(hdev, GFP_NOIO) < 0)
1277                         clear_bit(BTUSB_ISOC_RUNNING, &data->flags);
1278                 else
1279                         btusb_submit_isoc_urb(hdev, GFP_NOIO);
1280         }
1281
1282         spin_lock_irq(&data->txlock);
1283         play_deferred(data);
1284         clear_bit(BTUSB_SUSPENDING, &data->flags);
1285         spin_unlock_irq(&data->txlock);
1286         schedule_work(&data->work);
1287
1288         return 0;
1289
1290 failed:
1291         usb_scuttle_anchored_urbs(&data->deferred);
1292 done:
1293         spin_lock_irq(&data->txlock);
1294         clear_bit(BTUSB_SUSPENDING, &data->flags);
1295         spin_unlock_irq(&data->txlock);
1296
1297         return err;
1298 }
1299 #endif
1300
1301 static struct usb_driver btusb_driver = {
1302         .name           = "btusb",
1303         .probe          = btusb_probe,
1304         .disconnect     = btusb_disconnect,
1305 #ifdef CONFIG_PM
1306         .suspend        = btusb_suspend,
1307         .resume         = btusb_resume,
1308 #endif
1309         .id_table       = btusb_table,
1310         .supports_autosuspend = 1,
1311 };
1312
1313 static int __init btusb_init(void)
1314 {
1315         BT_INFO("Generic Bluetooth USB driver ver %s", VERSION);
1316
1317         return usb_register(&btusb_driver);
1318 }
1319
1320 static void __exit btusb_exit(void)
1321 {
1322         usb_deregister(&btusb_driver);
1323 }
1324
1325 module_init(btusb_init);
1326 module_exit(btusb_exit);
1327
1328 module_param(ignore_dga, bool, 0644);
1329 MODULE_PARM_DESC(ignore_dga, "Ignore devices with id 08fd:0001");
1330
1331 module_param(ignore_csr, bool, 0644);
1332 MODULE_PARM_DESC(ignore_csr, "Ignore devices with id 0a12:0001");
1333
1334 module_param(ignore_sniffer, bool, 0644);
1335 MODULE_PARM_DESC(ignore_sniffer, "Ignore devices with id 0a12:0002");
1336
1337 module_param(disable_scofix, bool, 0644);
1338 MODULE_PARM_DESC(disable_scofix, "Disable fixup of wrong SCO buffer size");
1339
1340 module_param(force_scofix, bool, 0644);
1341 MODULE_PARM_DESC(force_scofix, "Force fixup of wrong SCO buffers size");
1342
1343 module_param(reset, bool, 0644);
1344 MODULE_PARM_DESC(reset, "Send HCI reset command on initialization");
1345
1346 MODULE_AUTHOR("Marcel Holtmann <marcel@holtmann.org>");
1347 MODULE_DESCRIPTION("Generic Bluetooth USB driver ver " VERSION);
1348 MODULE_VERSION(VERSION);
1349 MODULE_LICENSE("GPL");